Motor Vehicle Door Hinge Sliding Bushing Assembly Protection
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Solution Overview
Problem
The repeated assembly and disassembly of motor vehicle door hinges can damage the contact surfaces, leading to incorrect door positioning, loss of functionality, or complete failure, especially during the painting process and assembly work.
Innovation Solution
A motor vehicle door hinge design featuring sliding bushings at each bearing point, with a bolt extending through these bushings to form contact surfaces, protecting them from damage during assembly, disassembly, and painting. The bolt is designed with a stud and stud collet for easy assembly and disassembly, and optional features like internal threads and rivet connections enhance security and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the door hinge is repeatedly assembled and disassembled during painting and assembly work, then the door can be properly installed and painted, but the contact surfaces are damaged leading to incorrect door positioning and potential failure
Solution Approach 1:
A sliding bushing is introduced as an intermediary component between the bolt and the door/console components. The sliding bushing contains the contact surfaces that interact during assembly and disassembly operations, protecting the critical mating surfaces from damage. This mediator allows repeated assembly operations while preserving the integrity of the load-bearing contact surfaces.
2Ease of operation
If the contact surfaces are exposed during assembly and disassembly operations, then easy assembly is achieved, but the surfaces are vulnerable to damage and contamination
Solution Approach 1:
The sliding bushing serves as a protective intermediary that encloses the vulnerable contact surfaces. During assembly and disassembly, the bushing remains in place and protects the internal contact surfaces from contamination and damage, while still allowing the door to be easily attached and detached via the external bolt interface.
Solution Approach 2:
The sliding bushing is pre-installed in the door or column console before the bolt is inserted. This preliminary placement ensures that the contact surfaces are already protected when assembly operations begin, preventing damage from the outset rather than requiring corrective measures afterward.
Data Source
AI summary
A door hinge for a motor vehicle has a column console that can be arranged on a door frame and a door console that can be attached to a vehicle door, wherein the door console and the column console are connected together as counterpieces at two bearing points arranged spaced from each other in a pin-jointed manner and separable for disassembly. In order to provide a motor vehicle door hinge in which the engaged surface are effectively protected from damage, it is provided that at the bearing points the door console or column console has a sliding bushing and the jointed connection is formed by two bolts, each of which extend through a sliding bushing and the associated counterpiece, wherein the sliding bushings and the bolts are arranged on the door or column console and on each other such that in the case of a pivoting of the consoles relative to each other the bolt is rotated relative to the sliding bushing and in the case of disassembly of the column console from the door console the bolt remains in the sliding bushing.